Heatmaps (Figure 2 a, b)

Parameters used are:

Plotting (Figure 2)

Plotting (Figure 3)

Explaination of interaction plot (Figure S2)

Interaction plots (only mother) (Figure 3 a, b)

The distances are not from the permiter of the mother but from the center of the mother location. (The radiuses range from 1 to 120 CM).

Arranging plots

Plotting final plots

Interaction plots (Figure 4 a, b)

Arranging plots

Plotting final plots

Distance From Mother (Figure 5 a, b)

Distance from mother - TD (Figure 5)

Distance from mother - NTD (Figure 6)

Test Wilcoxon.p.value Abs.Difference Statistic SD Effect.Size
# Of Excursions Per Minute 0.004329 0.2707935 35 0.0884232 3.06247

Permutation Tests - Number of excursions and time spent ~ Distance

Using permutation testing to compare the mean curves of excursions ~ distance and % of time near mother ~ distance.

Difference in curves (Figure S1 a, b, c, d)

Testing Distance between curves

Testing the hypothesis that the mean curve of the TD infants is higher than that of the NTD infants

Tests Distance.between.mean.curves Permutation.P.value Adjusted.BH
% Near mother ~ radius 0.2120728 0.028971 0.028971
# Excursions per minute ~ Radius 0.2382237 0.004995 0.009990

Mors plots of touching (Figure 7)

Mors plot of the frame in which the infant is touching the mother.

Comparing different statistics (Figure 8)

Testing the difference of different statistics (Wilcoxon test), the data was transformed for plotting.

Effect size is given by \(\frac{|\bar{x} - \bar{y}|}{SD}\). All tests conducted are Wilcoxon sum rank test, which do not require assumptions regarding the underlying distribution of observations.

Tests Un.Adjusted.P.value BH.P.value Abs.Difference Statistic SD Effect.Size
Excursions.100.CM.Per.Minute 0.0086580 0.0303030 0.2197053 34 0.0890959 2.465942
Touches.Duration 0.0086580 0.0303030 2.2754988 34 1.2129880 1.875945
Avg.Cover 0.0151515 0.0353535 0.8606797 33 0.4438178 1.939264
Time.Mother.Radius.100.CM 0.0259740 0.0363636 1.6914196 32 1.1243237 1.504388
Speed.Outside.Mother.Radius.100.CM 0.0259740 0.0363636 3.1264952 32 1.8646619 1.676709
Speed.Prog 0.0411255 0.0479798 7.2895021 31 5.4162971 1.345846
Touches.Num.Per.Min 0.0649351 0.0649351 0.2690847 30 0.1972967 1.363858